Yao through v1.0.0-rc22 authenticates but fails to authorize the GET /user/teams/:id endpoint, allowing any logged-in user to read full team records. Attackers can supply a known team identifier to retrieve sensitive team data including name, description, owner information, and settings without membership verification.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00199.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
YaoApp yao unaffected
Version Status Constraints
0 affected ≤ 1.0.0-rc22

No data.

No data.

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No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/YaoApp/yao cve-icon cve-icon
https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/oauth/providers/user/team.go#L37-L55 cve-icon cve-icon
https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/user/team.go#L80-L149 cve-icon cve-icon
https://github.com/YaoApp/yao/issues/1553 cve-icon cve-icon
https://www.vulncheck.com/advisories/yao-through-1.0.0-rc22-missing-authorization-via-openapi-team-endpoint cve-icon cve-icon
History

Tue, 15 Sep 2026 01:45:00 +0000

Type Values Removed Values Added
Description Yao through v1.0.0-rc22 authenticates but fails to authorize the GET /user/teams/:id endpoint, allowing any logged-in user to read full team records. Attackers can supply a known team identifier to retrieve sensitive team data including name, description, owner information, and settings without membership verification.
Title Yao through v1.0.0-rc22 Missing Authorization via OpenAPI team endpoint
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-15T01:20:35.168Z

Reserved: 2026-09-15T00:45:13.460Z

Link: CVE-2026-91774

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-15T02:16:50.183

Modified: 2026-09-15T02:16:50.183

Link: CVE-2026-91774

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-15T08:45:17Z

Weaknesses